I hope someone will be able to give me some advice.

I'm going to see my girlfriend in about two weeks. She lives outside the country, so it's kind of a big deal for me.

The last time I saw her, we had sex for the first time, but it wasn't quite how I thought it would be. We got started okay, but as we went further along, it seemed like it was never going to end for me. We tried several times with a few different positions, but the results were the same every time.

The lack of sensitivity really worried me. I didn't have any problem getting it up; it was more the inability to finish that bothered me. It was the first time for both of us, though, so I thought it might just be inexperience or first-time jitters working against me. Unfortunately, afterwards, I noticed that I was having problems even when I masturbate.

I thought at first it might have to do with my condition at the time. Admittedly, I'm not a small guy, and I wasn't in the greatest shape at the time. I've since dropped about 20lbs, and I'm in a lot better shape than I was before.

I did go see a urologist. He was able to rule out diabetes, which was a bit of a worry of mine. He seemed to think the problem was more psychological than physical, though I think I may try get a second opinion.

I guess there's a few things I'm wondering.

First and foremost, does anyone have any recommendations on how I might be able to increase my sensitivity? Any medications/supplements/etc?

Second, has anyone had any experiences like this? What could possibly cause something like this? I have to admit, I do usually masturbate 1-2 times per day. Is it possible that there may be some nerve damage?

I'd appreciate any advice or suggestions you all have to offer.